Mushrooms as decorations?

[Edymnion]

One of my overwintering plants is a dragonfruit cactus.  Apparently the soil got some fungal spores in it at some point, as its growing a few yellow cap mushrooms that I've been picking out every time I see one.  Was just wondering, they are interesting looking mushrooms, would they be dangerous to use as some living bonsai decoration?

[Edymnion]

Nevermind, looked up what they are, they wouldn't work for bonsai decoration, they get too large.

Inedible but harmless, I'll just keep weeding them out.

[exa]

But the idea using mushrooms as a decorative item is absolutely fantastic, almost revolutionary. Of course finding the correct types of fungi could be a bit of a handful.